Verifying-punch.



' G. B. BUCK.

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APPLICATION FILED )ULY 25.1916. ,ZSL Patented May 2l, 19181 2 SHEETS-SHEET l.

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G. B. BUCKn VERIFYING PUNCH.

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GEORGE 1B. BUCK, OF NEW YORK, N. Y., ASSIGNOR TO THE TABULATING MACHENE COM- PNY, 0F WASHINGTON, DISTRICT 0F COLUMBIA, A CORPORATION OF NEW JERSEY.

VEBIFYHWG-PUNCH.'

Specication of Letters Patent.

Patented May 21, 1918.

Application led July 25, 1916. Serial No. 111,204.

To all whom t may concern:

Be it known that l, GEORGE B. BUCK, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful lmprovements in Verifying-Punches, of which the following is a full, clear, and exact description.

This invention relates to certain new and useful improvements in verifying punches.

In tabulating machine work data are tabulated by punching differentially spaced holes on record cards. The machine for carrying out the punching operation may be the Hollerith machine shown in Patent No. 682,197. ln this machine, the punching operation is performed by depressing certain keys. Operators using the machine sometimes depress the wrong key and incorrect data are then tabulated upon the card.l lt has therefore vbeen found that usually the punched cards must be checked to determine if any errors have been made. Previously this checking has been done by a visual inspection of the cards but this method of checking has been found unsatisfactory .as the checker is liable to make the same error that was originally made by the operator who punched the card. Also the visual checking is a tedious and time-consuming operation.

The present invention is directed to a machine in which the punched cards may be placed and the errors detected. The operan tion of checking is exceedingly rapid and the possibility of checkers errors being identical with punching operators errors is largely eliminated.

VThe checking machine or verifying punch as it is preferably called is provided with keys similar to those in the card punching machine and the checker operates the keys just as if a new card were being punched. If the card is correctly punched the record card table or carrier feeds forward upon the depression of each key; but if a punch hole is incorrectly spaced in the card, the carrier does not feed forward thereby apprising the checker of the error in the card.

In the drawings:

Figure 1 kis a top plan view of the veriyins Punch;

Fig. 2 is a sectional view taken on line 2 2 of Fig. 1;

Fig. 3 is an enlarged detail view of the escapement mechanism for the record card earner;

Fig. 4 is a detail sectional view of the escapement mechanismv taken on line 4 4 of Fig. 3;

Fig. 5 is a detail view of a part of escapement operating devices and shows in detail the operation of the escapement shaft from the bail operated by the numeral keys;

Fig. 6 shows the -operation of a key and associated parts when the hole in the card is correctly positioned.

Fig. 7 shows the operation of the parts when the hole is incorrectly positioned in the card.

Fig. 8 is a detail view showing one of the punched record cards;

- Fig. 9 is a detail showing the connections for operating the-escapement and the tabulating ratchet-shifting mechanism;

Fig. 10 is a side view of the escapement ratchet and shows the tabulating ratchet.

ln more detail in Figs. l, and 2, 10 is the base of the machine which slidably supports the reciprocating record card carrier 11. The record card 12 (see Fig. 8) is placed between guides 13 in the frame of the. machine and the ends of the cards come into Contact with abutments 14 on the carrier. As the carrier is reciprocated the card 12 is slid back and forth as in the Hollerith machine. The card carried is moved in one direction by a motor spring M (see Figa) which connects with the carrier 11 through gear 15, pinion 16, shaft 17, pinion 18 'and rack 19. The numeral keys K are mounted to slide vertically in frame members as shown in Figs. 3, 6 and 7, and these keys K when depressed are adapted to rock levers 20. It will be understood that there is one lever 20 for each key as shown in Fig. 1. The levers dier from those in the Hollerith machine in several respects. lin the Hollerith machine the levers are fulcrumed at their ends upon fixed ulcrum points and upon being rocked were adapted to rock a bail downwardly which bail served to operate the escapement mechanism controlling the movement of the carrier. v in the present embodiment, the ends of the levers 20 bear against fulcrum pins 21, which pins are spring pressed downwardly by springs 22 which press against collars on the fu crum pins and at their upper ends against a casing as shownin Fig. 2.

Intermediate the fulcrum pin 21 and the keys K, the levers 20 rest upon the top of a vbail 24 which is pivotallymounted on the frame of the machine and upon the shaft 25. The bail 24 has a projecting portion 26 (see Figs. 5 and 9) whlch is adapted to rock a sleeve member 27 in a counter clockwise direction when the bail is depressed. The sleeve member is normally restored by a spring shown in Fig. l5v and this sleeve has secured to its end la pawl 28.

The pawl 28 carries a pin 29 which loosely engages in a hole in a retaining dog 31 which dog 1s normally held in engagement with the ratchet teeth on ratchet wheel 30 by means of a spring. punching machine the depression of a key rocks the bail 24 and through 27 rocks pawl 28 into engagement with the ratchet and retaining dog 31 out of engagement. Then on the release of the key the pawl 28 rocks out and dog 31 moves into engagement. Meanwhile the ratchet has fed forward one step under the power of the main spring M. The ratchet 30 is connected with the gear 15 and thereby controls the movement of the card carrier.

The escapement mechanism is also provided with a supplementary ratchet 32 having certain teeth cut away as shown in Fig. 10 and the retaining dog is adapted to be shifted to this ratchet when desired by depressing a special key K". Lever 20X will then depress part 33,thereby through tail 34 rocking rock member 34A and through link 35 forcing dog 31 to the outside ratchet 32.

At the'same time a lug 36 will rock the sleeve member 27 and the pawl and dog will then operate to permit the escapement action to take place. After the special key K has been operated, the depression of another numeral key K will, through tail 38 depending from bail 24, rock 34A ina reverse direction to restore the retaining dog to the inner ratchet 30. The retaining dog can be re leased from either ratchet wheel by depressing the release key L.

These parts are all present in the Hollerith punching machine and need not be described in further detail here. 'It is suttcient to state that the feed of the card earrier takes place upon the upward rocking of bail 24, and that by reason ofthe clearance between the pin 29 and the edges of the hole in the retaining dog 31, the bail 24 can be slightly depressed without operating the escapement and Awithout permitting the card carrier to move under the influence of the motor spring.

As in the Hollerith The devices `which permit. the carrier to l move if the card is correctly punched and which prevents such movement if the card is incorrectly punched, will now be described.

Beneath each of the key levers 20 (also 20") and intermediate the bail 24 and the spring fulcrum .plungers 21 are a series of buttons 40. Each of these buttons carries a downwardly extending detecting punch or pin 41 and the pins and buttons are normally held in upper position in the machine frame by springs 42 (see Fig. 6). The detecting pins extend in astraight line across themachine and occupy the same relative position therein as the perforating punches in the card punching machine. 1n fact their. construction is identical except that the lower ends are slightly rounded so as not to muti- ,late the card 12. n

In case a card is correctly punched, the depression of the correct key K will rock lever20 downwardly about the lower end of plunger 21 as a fulcrum, the detecting pin -41 will pass through the hole in the card,

and bail 24 will be rocked downward to such an extent that upon the release of the key K, the escapement will operate and the card carrier 'll advance in the manner heretoforel described. The operation showing the 'detecting punch or pin passing through the hole in the card is illustrated in Fig. 6.

Howeverif the hole has not been properly punched in the card, or if the wrong key K is operated, the lever 20 or 20x will first be rocked about 21 as a fulcrum and the bail l24 will be rocked slightly as shown in Fig.

7. As soon as the detecting pin 41 comes into contact with the card 12 the fulcrum of the lever changes-button 40 becomes the fulcrum of the lever thereby elevating the plunger 21v against the tension of spring.

y reason of the changed position of thc fulcrum of the lever 20, the bail 24 isonly rocked to a slight extent by the further depression of the key and this movement is not suicient to lift the retaining dog from its coperating ratchet. Therefore upon release of the Ikey Kno feed of the card carrier'takes place. This immediately indicates to the checker that there is a mistake in the card or that he, the checker, has depressed the wrong key in the verifying machine. 1f the latter is the case, the checker can immediately correct his mistake by depressing the correct key. If the card carrier still does not feed, the checker knows that the card is incorrect and he can then remove it from the machine and mark the error so that a new and correct card can be made.

By the use of this verifying punch the operation of checking cards can be carried out wlth greater facility and double errors of both punching and checking are "ery It is to be understood that my invention is not limited to the particular embodiment shown and described but that what I claim as my invention is more particularly pointed out in the appended claims.

1. In a machine of the class described, in

combination, a support for a punch card; a

series of keys; a series of pins for registering with the holes in said card; `operative connections between each of said keys and one of said pins; and means for indicating the failure of any pin, when actuated by a key, to register with a hole in said card.

2. In a machine of the class described, in combination with a support for a punched card; a series of keys; a series of pins for registering with the holes in said card; operative connections between each of said keys and one of said pins; and means for indicating the registration of a pin with a hole upon the actuation of the proper key.

3. In a machine ofthe class described, in combination with a support for a punched card; a series of keys; a series of pins for registering with the holes in said card; operative connections between each of said keys and one of said pins; means for indicating the registration of a pin with a 'hole in the card upon the actuation of the proper key; and means for indicating the failure of any pin to register with a hole in the card upon the actuation of a key.

4. In a m chine of the class described, in combination with a card carrier to receive a punched card and advance the same; a plurality of keys; mechanism operated thereby and adapted to coperate with the card; a means for advancing the card carrier; and means operable when the key operated mechanism registers with a hole in the card, to permit the advance of thev card carrier, said means being inoperable to permit the advance of the card carrier upon the non-registration of the key actuated mechanism and the hole in the card.

5. In a machine of the class described, in combination with a card carrier adapted to receive a punched record card and having provisions to advance the same; a plurality of keys; mechanism operated thereby and adapted to coperate with the record card;

meansl to control the advancing movement of the card carrier; and means to control the effective operation of thesaid controlling mechanism upon the registration or nonregistration of the key-operated mechanism and a hole in the card.

6. In a machine of the class described, in combination with a card carrier adapted to receive a punched record card, and having provisions to advance the same; means to control the advance of the card carrier; a plurality of keys; key-operated mechanism in coperative relation to the punched card;

and means associated therewith to operate the controlling'mechanism to permit the advance of the card carrier upon a registration of the key-actuated mechanism and a hole inthe card, said means being ineffective to permit the advance of the card carrier when the key-actuated mechanism does not register with the hole in the card.

7. In a machine of the class described, in combination with a card carrier adapted to receive a punched record card, and having provisions to advance the same; means to control the advance of the card carrier; a plurality of keys; key-operated mechanism in coperative relation to the punch card; and means associated therewith to prevent the effective operation of the controlling mechanism upon the non-registration of the key-actuated mechanism andthe hole in the record card,- Whereby the card carrier is not advanced when such non-registration occurs.

8. In a machine of the class described, in combination, a card carrier adapted to receive a punched record card; a seriesv ofl veriying pins disposed adjacent to the card; keys to operate the same; a driving means for the card carrier; an escapement mechanism; and means, operable upon the actuation of a key and upon a verifying pin passing through a hole in the card, to operate the escapement and permit the driving means to advance the card carrier.

9. In a machine of the class described, in combination, a card carrier adapted to receive a punched record card; a series of verifying pins disposed adjacent to the card; keys to operate the same; a driving means for the card carrier; an escapement mechanism; and means, operable upon the actuation of a key, to operate or prevent the operation of the escapement in accordance with the passing or non-passing of a verifying pin through a hole in the card. v

10. In a machine of the class described, in combination, a card carrier adapted to l receive a punched record card; a driving means therefor; an escapement to control the movement of the card carrier; a series of verifying pins disposed adjacent the record card; a series of operating keys; a series of levers, each of said levers depressing one of the verifying pins upon the depression of a movement of the card carrier; a series of verifying pins disposed ad]acent the record card; a series of operating keys; a series-ofy the record card, said fulcrum maintaining.

its position when the verifying pin passes through a hole in the record card; a bail operated by the levers and having operating connections with the escapement to operate the same, said bail being adapted to be v moved suiciently to operate the escapement 15 In `testimony whereof I aix my signature 20 in the presence of two subscribing witnesses.

y GEORGE B. BUCK. Witnesses:

MARGARET EGAN,A Cms. BAUMGARTEN. 

